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08:15 Social Studies Why the US Army tried to exterminate the bison Lesson duration 08:15 1,655,941 Views
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05:25 Literature & Language The Norse myth that inspired “The Lord of the Rings” Lesson duration 05:25 3,018,358 Views
04:47 Social Studies Why are scientists obsessed with the Black Sea? Lesson duration 04:47 469,501 Views
04:35 Social Studies What happened to the lost Kingdom of Kush? Lesson duration 04:35 1,047,701 Views
05:26 Literature & Language The surprising origins of the word “lesbian” Lesson duration 05:26 772,001 Views
04:48 Social Studies The infamous overpopulation bet: Simon vs. Ehrlich Lesson duration 04:48 587,791 Views
05:27 Science & Technology Is this the most successful animal ever? Lesson duration 05:27 518,884 Views
05:29 Social Studies The secret society of the Great Dismal Swamp Lesson duration 05:29 310,695 Views
04:55 Business & Economics How do governments create money out of thin air? Lesson duration 04:55 986,435 Views
05:34 Science & Technology The most notorious scientific feud in history Lesson duration 05:34 1,133,089 Views